TW201642523A - Antenna module - Google Patents

Abstract

An antenna module comprises a plurality of grounding conductors, a connection conductor and a plurality of first radiation conductors. The grounding conductors are set at intervals. Each of the grounding conductors has a first grounding end. The connection conductor is connected between the grounding conductors. The first radiation conductors are connected with the grounding conductors respectively. Each of the first radiation conductors has a first feeding end. The first feeding end of each of the first radiation conductors is apart from and close to the first grounding end of the grounding conductor that is connected with said first radiation conductor. In the above elements, at least one of the grounding conductors has a first isolation penetrating slot capable of improving the efficacy of isolation.

Description

Antenna module

The invention relates to an antenna module, in particular to an antenna module supporting multiple input multiple output (MIMO) communication.

Multi-input and multi-output (MIMO) communication is widely used because it can effectively improve the data throughput and transmission distance of communication systems. Multi-input and multi-output communication requires signal transmission through multiple antennas. In order to reduce the overall volume of the plurality of antennas as being suitable for being placed in a mobile device that is increasingly thin, light and short, an antenna module sharing a radiation conductor has been developed. However, the feed current of any antenna of the foregoing antenna module easily flows to other antennas via the shared radiation conductor, resulting in a decrease in isolation between the antennas, and the antennas easily interfere with each other. Therefore, how to develop a new antenna module can improve the disadvantages of the prior art described above, and becomes a further disadvantage of the present invention.

Accordingly, it is an object of the present invention to provide an antenna module that improves isolation.

Thus, an antenna module of the present invention includes a plurality of ground conductors, a connection conductor, and a plurality of first radiation conductors. Grounding guide The bodies are spaced apart from each other. Each of the ground conductors has a first ground terminal. The connecting conductor is connected between the grounding conductors. The first radiating conductors are respectively connected to the ground conductors. Each of the first radiation conductors has a first feed end. The first feed end of each of the first radiation conductors is spaced apart from and adjacent to the first ground end of the ground conductor to which the first radiation conductor is connected. Wherein at least one of the ground conductors has a first isolation slot.

In some implementations, the antenna module further includes at least one isolation conductor connected to one of the ground conductors.

In some embodiments, the connecting conductor has a second isolation slot.

In some embodiments, each of the ground conductors has the first isolation via, and the antenna module includes a plurality of the isolation conductors, and the isolation conductors are respectively connected to the ground conductors.

In some implementations, the antenna module further includes a plurality of second radiation conductors respectively connected to the ground conductors, each of the second radiation conductors having a second feed end, each of the ground conductors further having a second ground end, the second feed end of each of the second radiation conductors is spaced apart from and adjacent to the second ground end of the ground conductor to which the second radiation conductor is connected.

In some embodiments, each of the ground conductors has a first side edge, a second side edge, and a third side edge connecting the first side edge and the second side edge, and each of the ground conductors The first side edge is connected to the third side edge of another ground conductor, and the first radiation guide is connected to each of the ground conductors The second radiating conductor connected to each of the grounding conductors is connected to the first side edge, and the isolating conductor connected to each of the grounding conductors is connected to the second side edge. The first isolation through slot of each of the ground conductors extends from the interior of the ground conductor to the third side edge, and a straight line connecting the first ground end and the second ground end of each of the ground conductors passes through the ground conductor The first isolation slot.

In some embodiments, each of the first isolation slots has a first slot segment and a second slot segment that communicates with the first slot segment. The second slot segment is substantially perpendicular to the first slot segment. And extending from the first slot segment to the third side edge.

In some embodiments, each of the isolation conductors includes a first conductor segment coupled to the second side edge, and a second conductor segment coupled to the first conductor segment, the second conductor segment being associated with the first conductor segment A conductor segment is vertical.

In some embodiments, each of the first radiation conductors has a first feed section, a first ground section extending from the first feed section to the third side edge, and a first feedthrough connected to the first feedthrough a first radiating section parallel to the third side edge, and a second radiating section connected to the first feeding section and extending toward the third side edge, the first feeding section having the first Feeding end.

In some embodiments, each of the second radiation conductors has a second feed section, and a second ground section extending from the second feed section to the first side edge, the second feed section having The second feed end.

The effect of the invention is that the isolation can be effectively improved by the first isolation slot, the isolation conductor and the second isolation slot, and the antenna module has a small volume and is suitable for configuration. Miniaturized Portable electronic device.

100‧‧‧Antenna Module

1, 1A, 1B, 1C‧‧‧ grounding conductor

31‧‧‧First feed segment

311‧‧‧first feed end

11‧‧‧First side edge

32‧‧‧First grounding section

12‧‧‧Second side

33‧‧‧First radiant section

13‧‧‧ third side

34‧‧‧second radiant section

14‧‧‧First ground

4, 4A, 4B, 4C‧‧‧Isolated conductor

15‧‧‧Second ground

16, 16A, 16B, 16C‧‧‧ first isolation slot

41‧‧‧First conductor segment

42‧‧‧Second conductor segment

161‧‧‧First trough section

5, 5A, 5B, 5C‧‧‧ second radiation conductor

162‧‧‧Second trough section

2‧‧‧Connecting conductor

51‧‧‧second feed section

21‧‧‧Second isolation slot

511‧‧‧second feed end

3, 3A, 3B, 3C ‧‧‧First radiation conductor

52‧‧‧Second grounding segment

The other features and advantages of the present invention will be apparent from the embodiments of the present invention. FIG. 1 is a perspective view of an embodiment of the antenna module of the present invention; FIG. 2 is a top view of the embodiment; 3 is a partial perspective view of the embodiment; FIG. 4 to FIG. 9 respectively show voltage standing wave ratio diagrams related to the plurality of first radiation conductors and the plurality of second radiation conductors; FIG. 10 to FIG. 12 respectively show the first The radiation conductor operates at a radiation field pattern of 2.45 GHz; and Figures 13 to 15 respectively show radiation pattern patterns of the second radiation conductor operating at 5.55 GHz.

Referring to FIG. 1 , FIG. 2 and FIG. 3 , an embodiment of an antenna module 100 of the present invention includes a plurality of ground conductors 1 , a connecting conductor 2 , a plurality of first radiating conductors 3 , a plurality of isolated conductors 4 , and a plurality of second Radiation conductor 5. The antenna module 100 is integrally formed of a metal material. The number of the ground conductor 1, the first radiation conductor 3, the isolation conductor 4, and the second radiation conductor 5 are the same. In this embodiment, the ground conductor 1, the first radiation conductor 3, the isolation conductor 4, and the second radiation conductor 5 The number is three.

The ground conductors 1 are spaced apart from one another and lie on the same plane. Each of the ground conductors 1 has a structure in which the antenna module 100 is formed on the plane A first side edge 11, a second side edge 12 and a third side edge 13 of the profile. The first side edge 11 of each of the ground conductors 1 is substantially parallel to the second side edge 12 thereof. The third side edge 13 of each grounding conductor 1 is connected to the first side edge 11 and the second side edge 12 thereof, and is substantially perpendicular to the first side edge 11 and the second side edge 12.

Each grounding conductor 1 further has a first grounding end 14, a second grounding end 15, and a first isolation through slot 16. The first ground end 14 of each ground conductor 1 is adjacent to its third side edge 13 and the second ground end 15 of each ground conductor 1 is adjacent to its first side edge 11. A straight line connecting the first ground end 14 and the second ground end 15 of each ground conductor 1 passes through the first isolation through slot 16 of the ground conductor 1. The first isolation through slot 16 of each ground conductor 1 extends from the interior of the ground conductor 1 to its third side edge 13. The first isolation through slot 16 of the embodiment has an L-shape, and has a long straight first slot segment 161 and a second slot segment 162 that is connected to the first slot segment 161 and has a long straight shape. The second slot segment 162 is perpendicular to the first slot segment 161 and extends from one end of the first slot segment 161 to the third sidewall 13 .

The connecting conductor 2 is connected between the ground conductors 1. The connecting conductor 2 has a second isolated through slot 21 in the form of a circle.

The first radiation conductors 3 are respectively connected to the ground conductors 1. The first radiation conductor 3 connected to each of the ground conductors 1 is connected to the third side edge 13 of the ground conductor 1. Each of the first radiating conductors 3 has a longitudinally extending first feeding section 31, a first grounding section 32 which is L-shaped and extends from the first feeding section 31 to the third side edge 13, and is connected to the first feeding a first radiating section 33 extending into one end of the section 31 and extending in parallel with the third side edge 13 , and a second radiating section connected to one end of the first feeding section 31 and extending in an L shape toward the third side edge 13 Shooting segment 34. The other end of the first feeding section 31 has a first feeding end 311. The first feeding end 311 of each of the first radiating conductors 3 is spaced apart from and adjacent to the first ground end 14 of the grounding conductor 1 to which the first radiating conductor 3 is connected, and the first feeding end 311 and the first adjacent to each other A grounding terminal 14 is electrically connected to the core and the outer conductive layer of a feeding cable (not shown) to respectively receive the first RF signal and the grounding signal.

The second radiation conductors 5 are respectively connected to the ground conductors 1. The second radiation conductor 5 connected to each of the ground conductors 1 is connected to the first side edge 11. Each of the second radiating conductors 5 has a longitudinally extending second feed section 51 and a second grounding section 52 which is U-shaped and extends from one end of the second feed section 51 to the first side edge 11. The other end of the second feeding section 51 has a second feeding end 511. The second feeding end 511 of each of the second radiating conductors 5 is spaced apart from and adjacent to the second ground end 15 of the grounding conductor 1 to which the second radiating conductor 5 is connected, and the second feeding end 511 and the first adjacent to each other The two grounding ends 15 are respectively electrically connected to the core and the outer conductive layer of a feeding cable (not shown) to respectively receive the second RF signal and the grounding signal.

Each of the isolating conductors 4 is L-shaped and includes a first conductor segment 41 extending longitudinally and connected to the second side edge 12, and a second conductor segment 42 connected to one end of the first conductor segment 41. The second conductor segment 42 is perpendicular to the first conductor segment 41 and extends parallel to the second side edge 12.

Refer to Figure 4 and Table 1 below for the voltage standing wave ratio (VSWR) associated with the first radiation conductor 3A.

Table 1

Refer to Figure 5 and Table 2 below for the voltage standing wave ratio (VSWR) associated with the first radiation conductor 3B.

Refer to Figure 6 and Table 3 below for the voltage standing wave ratio (VSWR) associated with the first radiation conductor 3C.

Refer to Figure 7 and Table 4 below for the voltage standing wave ratio (VSWR) associated with the second radiating conductor 5A.

Refer to Figure 8 and Table 5 below for the voltage standing wave ratio (VSWR) associated with the second radiating conductor 5B.

See Figure 9 and Table 6 below for the voltage standing wave ratio (VSWR) associated with the second radiating conductor 5C.

Fig. 10 shows a radiation pattern diagram of the first radiation conductor 3A operating at 2.45 GHz. See Table 7 below for related performance and gain.

Figure 11 shows a radiation pattern of the first radiation conductor 3B operating at 2.45 GHz. See Table 8 below for related performance and gain.

Figure 12 shows a radiation pattern of the first radiation conductor 3C operating at 2.45 GHz. See Table 9 below for related performance and gain.

Figure 13 shows the second radiation conductor 5A operating at 5.55 GHz Radiation pattern map. See Table 10 below for related performance and gain.

Figure 14 shows a radiation pattern of the second radiation conductor 5B operating at 5.55 GHz. See Table 11 below for related performance and gain.

Fig. 15 shows a radiation pattern diagram of the second radiation conductor 5C operating at 5.55 GHz. See Table 12 below for related performance and gain.

Referring to FIG. 1 , FIG. 2 and FIG. 3 , the first isolation slot 16 , the isolation conductor 4 and the second isolation slot 21 of the ground conductor 1 can increase the first RF signal and the second RF signal. The feed current flows from the first feed end 311 and the second feed end 511 to the path lengths of the other first radiation conductor 3 and the second radiation conductor 5, thereby improving the isolation. In this embodiment, the first isolation via 16 of each ground conductor 1 is connected through a straight line connecting the first ground end 14 and the second ground end 15, so that the first radiation conductor connected to the ground conductor 1 can be effectively increased. 3 and the current path length between the second radiation conductors 5, thereby improving the isolation between the first radiation conductor 3 and the second radiation conductor 5. For example, the first isolation via 16A can effectively increase the current path length between the first radiation conductor 3A and the second radiation conductor 5A, thereby improving the relationship between the first radiation conductor 3A and the second radiation conductor 5A. Isolation degree; the first isolation through-groove 16B can effectively increase the current path length between the first radiation conductor 3B and the second radiation conductor 5B, thereby improving the isolation between the first radiation conductor 3B and the second radiation conductor 5B. Degree; the first isolation through slot 16B can effectively increase the first radiation conductor 3B and the second The length of the current path between the radiation conductors 5B can thus improve the isolation between the first radiation conductor 3B and the second radiation conductor 5B. In this embodiment, the isolation conductor 4 connected to the second side edge 12 of the ground conductor 1 can effectively improve the relationship between the first radiation conductor 3 and the second radiation conductor 5 adjacent to the isolation conductor 4. Isolation. For example, the isolation conductor 4A can effectively improve the isolation between the first radiation conductor 3A and the second radiation conductor 5B adjacent to the isolation conductor 4A; the isolation conductor 4B can effectively improve the first radiation conductor 3B adjacent to the isolation conductor 4B. And the isolation between the second radiation conductor 5C; the isolation conductor 4C can effectively improve the isolation between the first radiation conductor 3C and the second radiation conductor 5A adjacent to the isolation conductor 4C.

For the return loss of this embodiment, refer to Table 13 below, wherein S11 is the return loss of the first feed end 311 of the first radiation conductor 3A; S22 is the first feed end 311 of the first radiation conductor 3B. Return loss; S33 is the return loss of the first feed end 311 of the first radiation conductor 3C; S44 is the return loss of the second feed end 511 of the second radiation conductor 5A; S55 is the second feed of the second radiation conductor 5B The return loss of the input end 511; S66 is the return loss of the second feed end 511 of the second radiation conductor 5C.

The isolation of this embodiment is shown in Tables 14, 15, and 16. S21 in Table 14 is the isolation between the first feed end 311 of the first radiation conductor 3A and the first feed end 311 of the first radiation conductor 3B, and S31 is the first feed representing the first radiation conductor 3A. The isolation between the input end 311 and the first feed end 311 of the first radiation conductor 3C, S32 is the first feed end 311 of the first radiation conductor 3B and the first feed end 311 of the first radiation conductor 3C. The isolation between S54 is the isolation between the second feed end 511 of the second radiation conductor 5A and the second feed end 511 of the second radiation conductor 5B, and S64 is the second radiation conductor 5A. The isolation between the second feed end 511 and the second feed end 511 of the second radiation conductor 5C, S65 is the second feed end of the second feed end 511 and the second radiation conductor 5C of the second radiation conductor 5B. The isolation between the terminals 511, S65 is the isolation between the second feed end 511 of the second radiation conductor 5B and the second feed end 511 of the second radiation conductor 5C.

Table 14

S41 in Table 15 is the isolation between the first feed end 311 of the first radiation conductor 3A and the second feed end 511 of the second radiation conductor 5A, and S51 is the first feed representing the first radiation conductor 3A. The isolation between the input end 311 and the second feed end 511 of the second radiation conductor 5B, S61 is the first feed end 311 representing the first radiation conductor 3A and the second feed end 511 of the second radiation conductor 5C. The isolation between S42 is the isolation between the first feeding end 311 of the first radiation conductor 3B and the second feeding end 511 of the second radiation conductor 5A, and S52 is the first representative of the first radiation conductor 3B. The isolation between a feed end 311 and the second feed end 511 of the second radiation conductor 5B, S62 is a second feed of the first feed end 311 and the second radiation conductor 5C of the first radiation conductor 3B. The isolation between the terminals 511, S43 represents the isolation between the first feed end 311 of the first radiation conductor 3C and the second feed end 511 of the second radiation conductor 5A, and S53 represents the first radiation conductor 3C. The isolation between the first feed end 311 and the second feed end 511 of the second radiation conductor 5B, S63 is the first feed representing the first radiation conductor 3C 511 isolation between the conductor 311 and the second feed end 5C of the radiation into the second end.

S14 in Table 16 is the isolation between the second feed end 511 representing the second radiation conductor 5A and the first feed end 311 of the first radiation conductor 3A, and S24 is the second feed representing the second radiation conductor 5A. The isolation between the input end 511 and the first feed end 311 of the first radiation conductor 3B, S34 is the second feed end 511 representing the second radiation conductor 5A and the first feed end 311 of the first radiation conductor 3C. The isolation between S15 is the isolation between the second feed end 511 of the second radiation conductor 5B and the first feed end 311 of the first radiation conductor 3A, and S25 represents the second radiation conductor 5B. The isolation between the second feed end 511 and the first feed end 311 of the first radiation conductor 3B, S35 is the first feed end representing the second feed end 511 of the second radiation conductor 5B and the first radiation conductor 3C The isolation between the terminals 311, S16 represents the isolation between the second feed end 511 of the second radiation conductor 5C and the first feed end 311 of the first radiation conductor 3A, and S26 represents the second radiation conductor 5C. The isolation between the second feed end 511 and the first feed end 311 of the first radiation conductor 3B, and S36 is the second feed representing the second radiation conductor 5C. 311 isolation between a first end 511 and fed into the first end of the radiating conductor 3C.

Tables 14, 15, and 16 show that the isolation is less than -20 dB, indicating that the present invention can effectively improve the isolation between the first radiation conductors 3A, 3B, 3C and the second radiation conductors 5A, 5B, 5C.

In summary, the antenna module 100 of the present invention can effectively improve the isolation by the first isolation via 16, the isolation conductor 4 and the second isolation via 21, and the antenna module 100 has a small volume and is suitable for the antenna module 100. It is disposed in a miniaturized portable electronic device, so that the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

100‧‧‧Antenna Module

3, 3A, 3B, 3C‧‧‧ first radiation conductor

1, 1A, 1B, 1C‧‧‧ grounding conductor

311‧‧‧first feed end

11‧‧‧First side edge

4, 4A, 4B, 4C‧‧‧Isolated conductor

12‧‧‧Second side

13‧‧‧ third side

5, 5A, 5B, 5C‧‧‧ second radiation conductor

14‧‧‧First ground

15‧‧‧Second ground

511‧‧‧second feed end

16‧‧‧First isolation slot

2‧‧‧Connecting conductor

21‧‧‧Second isolation slot

Claims (10)

An antenna module includes: a plurality of grounding conductors spaced apart from each other, each of the grounding conductors having a first grounding end; a connecting conductor connected between the grounding conductors; and a plurality of first radiating conductors respectively connected Each of the first radiation conductors has a first feed end, and the first feed end of each of the first radiation conductors and the first ground of the ground conductor to which the first radiation conductor is connected The ends are spaced apart and adjacent to one another; wherein at least one of the ground conductors has a first isolation slot. The antenna module of claim 1, further comprising at least one isolation conductor connected to one of the ground conductors. The antenna module of claim 2, wherein the connecting conductor has a second isolation slot. The antenna module of claim 2, wherein each of the ground conductors has the first isolation via, and the antenna module comprises a plurality of the isolation conductors, and the isolation conductors are respectively connected to the ground conductors. The antenna module of claim 4, further comprising a plurality of second radiating conductors respectively connected to the grounding conductors, each of the second radiating conductors having a second feeding end, each of the grounding conductors further having a first The second grounding end of the second radiating conductor is spaced apart from and adjacent to the second ground end of the grounding conductor to which the second radiating conductor is connected. The antenna module of claim 5, wherein each of the ground conductors has a first side edge, a second side edge, and a third side edge connecting the first side edge and the second side edge, and the first side edge of each of the ground conductors is connected to another ground conductor The third side edge, the first radiation conductor connected to each of the ground conductors is connected to the third side edge, and the second radiation conductor connected to each of the ground conductors is connected to the first side edge, and each The isolation conductor connected to the ground conductor is connected to the second side edge, and the first isolation through slot of each of the ground conductors extends from the interior of the ground conductor to the third side edge, and the first of the ground conductors A straight line connecting a ground end and the second ground end passes through the first isolation through slot of the ground conductor. The antenna module of claim 6, wherein each of the first isolation slots has a first slot segment and a second slot segment that communicates with the first slot segment, the second slot segment The first slot segment is vertical and extends from the first slot segment to the third side edge. The antenna module of claim 6, wherein each of the isolation conductors comprises a first conductor segment connected to the second side edge, and a second conductor segment connected to the first conductor segment, the second The conductor segment is substantially perpendicular to the first conductor segment. The antenna module of claim 6, wherein each of the first radiation conductors has a first feeding section, a first grounding section extending from the first feeding section to the third side edge, and a connection a first radiating section parallel to the third side edge of the first feeding section, and a second radiating section connected to the first feeding section and extending toward the third side edge, the first feeding The ingress segment has the first feed end. The antenna module of claim 6, wherein each of the second radiating conductors has a second feeding section, and a second grounding section extending from the second feeding section to the first side edge, The second feed section has the second feed end.